Jølstra is a river in the municipalities of Jølster and Førde in Sogn og Fjordane county, Norway. The long river flows from the lake of Jølstravatnet (at an elevation of above sea level) down to the Førdefjorden (which is at sea level). The river begins at the village of Vassenden, on the shores of the lake, it then goes past the village of Langhaugane, then past the Moskog area of Førde, past the village of Bruland, and it finally flows to its mouth at the town of Førde, on the shores of the fjord. There are four hydroelectric power stations in the river. The average rate of flow in Jølstra is given as , measured at Høgset over the period from 1993 to 2011. The highest recorded flow rate during this period was , while the lowest recorded flow rate was .